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1. What chemical bond is the result of the sharing of electrons?
covalent
2.What is the charge on an electron?
negative 1
3. What is the term for a charged atom?
ion
4. What is a dipole?
partial charge
5. What is the strongest type of chemical bond?
covalent bond
6. What is the common biological term for a dipole to dipole interaction between two molecules?
hydrogen bond
7. Is this interaction strong or weak?
weak
8. What is the name of the bond held together by the electrical attraction of two oppositely charged ions?
ionic bond
9. Is the following molecule polar or nonpolar?
HCOOH
polar
10. What row are my seats for UT football and Longhorn Band. Hint: they are in the upper deck and lowest row is 1 and the highest row is 54.
52
1. What chemical bond is the result of the sharing of electrons?
covalent bond
2.What is the charge on an electron?
negative
3. What is the term for a charged atom?
ion
4. What is a dipole?
partial charge
5. What is the strongest type of chemical bond?
covalent bond
6. What is the common biological term for a dipole to dipole interaction between two molecules?
hydrogen bond
7. Is this interaction strong or weak?
weak
8. What is the name of the bond held together by the electrical attraction of two oppositely charged ions?
ionic bond
9. Is the following molecule polar or nonpolar?
HCOOH
polar
10. What is the name of the bond that holds together two monosaccharides in a polysaccharide?
glycosidic bond
1. Name the bond that is formed by the electrical attraction of oppositely (fully) charged particles.
ionic bond
2. What is the term used to describe a partial charge?
dipole
3. What is meant by a polar covalent bond?
a bond in which there is an equal sharing of electrons and therefore has no dipoles
4. What is meant by the term macromolecule?
a large molecule made from the joining together of many small building block molecules
5-6. List the two types of macromolecules that were discussed in class (so far) and list the building block molecule for each.
polysaccharides: monosaccharides
proteins: amino acids
7. What is the major function of proteins mentioned in class?
enzymes
8. What is meant by the primary structure of a protein?
sequence of amino acids in a protein
9. List one way you can denature a protein and explain why this would denature a protein.
heat (or change pH or change ionic strength): heating can cause hydrogen bonds to break, thus disrupting the three dimensional structure of a protein.
10. An " helix is a common form of what protein structure?
secondary
1. What is the name of the covalent bond that holds amino acids together in a protein?
peptide bond
2. The "-helix is a form of ______________ structure of a protein.
secondary
3. What class of lipid described in class can be used as a hormone?
steroids
4. What is the building block molecule of a nucleic acid?
nucleotide
5. What is a cellular function of nucleic acids as given in class?
genetic material or stores the instructions on how to make all proteins (code for primary structure)
6. In diffusion, a substance always moves from an area of concentration to an area of concentration.
7. What is the source of energy that drives diffusion (what is the origin of the force that pushes the molecules)?
heat
8. Solution A has a concentration of glucose = 1.0 M while Solution B has a concentration of glucose = 2.0 M. If these two solutions are separated by a barrier that is impermeable to glucose but is permeable to water, where will the water move (net movement)?
Into A
Neither, the water is in equilibrium
9. A solution contains 1 M glucose, 1 M NaCl and 1 M sucrose. Calculate the osmolarity of the solution.
4 osm
10. /False:
Under the correct conditions, it is possible for diffusion to move a substance
from an area of high concentration to an area of low concentration.